Nozzle for supporting a weft thread in a weaving machine

ABSTRACT

Nozzle for supporting a weft thread in a weaving machine, provided with a flow-through canalisation for a fluid flowing out in at least one outlet opening, wherein the nozzle is at least partially composed of segments.

The present invention concerns a nozzle for supporting a weft thread ina weaving machine, in other words a nozzle for creating a fluid jet tocarry a weft thread along the reed of the weaving machine through theweaving shed.

In the first place is meant a relay nozzle for an air jet weavingmachine by such a nozzle, but it is clear that more generally also othernozzles are meant by it, also for other fluids than air.

It is known that such nozzles can be made in different shapes, as afunction of the aimed effect.

Thus, for example, a nozzle is known from BE 1,012,608 which is providedwith a lateral protuberance near its free end which is mainly directedtowards the reed when the nozzle is used. This special outer shapeoffers the advantage that the nozzle can be smoothly moved through thewarp threads in and out of the weaving shed. Such a special outer shapehas for a result that, if the nozzle were made of a housing with aconstant wall thickness, also the inner shape would assume the specialdesign of the outer shape, which of course is not ideal for the flow ofthe fluid through the nozzle. That is why it was suggested in BE1,012,608 to apply an inner shape which differs from the outer shape.

Also from other patent documents, for example EP 0,145,824, CS 266,516and CS 281,607 it is known to apply an inner shape which clearly differsfrom the outer shape.

A general problem with the techniques known until now for manufacturingnozzles consists in that it is not easy to provide a desiredflow-through canalisation therein, especially not when the inner shapeof the nozzle differs from the outer shape.

In general, such nozzles are relatively small, and providing aflow-through canalisation therein was not simple until now, all the moreas such a flow-through canalisation has to be made rather accurately, asit determines the flow of the fluid leaving the nozzle, in other wordsof the outgoing fluid jet, and as such a fluid jet has to be directed aspowerful and as good as possible in order to optimally move a weftthread along the reed.

Also, according to a first aspect of the invention, it aims a nozzlewhich can be made in an efficient manner, whereby the inner shape andthe outer shape can be easily optimised independently from each otherand whereby practically any shape whatsoever can be easily realised.

According to this first aspect, the invention concerns a nozzle forsupporting a weft thread in a weaving machine which is provided with aflow-through canalisation for a fluid flowing out in at least one outletopening, characterised in that the nozzle is at least partially composedof segments.

By making use of segments, they can be easily made separately and bejoined together afterwards. Since every segment only forms a part of thewhole, it is as such easily accessible from all sides and there is noproblem to realise it in any desired shape whatsoever.

Further, the use of such segments makes it possible to easily realisedifferent inner shapes, in other words shapes for the flow-throughcanalisation.

The segments are preferably made plate-shaped, in particular as thinplates which are placed against one another. In order to form suchplates, one can simply take a base plate out of which said plates can bemade in any desired shape whatsoever. It is clear that in order to makethem, a large number of techniques known as such are available, such asfor example wire sparking, laser cutting, milling, etching,electroforming, fine-blanking, etc. Techniques of another nature are notexcluded either. Thus, for example, the plates can also be realised bymeans of a casting technique, after which they can possibly be finishedmechanically.

The segments may be formed of straight, flat elements, for example flatplates, which are placed against each other. Such straight, flatelements offer the advantage that they can be easily realised and arealso easy to combine into a whole. However, this does not exclude thatsegments can also be applied having a shape which is different from aflat shape, which offers the advantage that it is easy to create specialeffects, for example in view of the optimisation of the fluid jetflowing out of the nozzle.

The segments, in particular the plates, can be made with a constantthickness as well as with a varying thickness, which also allows tocreate different effects. It should be noted that the thickness of thesegments can be very small and may for example amount to 0.1 mm or evenless. Further, it is possible to apply segments of varying thicknessand/or shape in one and the same nozzle, so that for example partitionwalls realised with the latter can be made very thin, whereas thesegments serving as lateral parts can be made relatively thick.

The use of segments offers the advantage that any shape whatsoever canbe easily made with great accuracy.

According to a preferred embodiment, the segments are held in a casing,as a result of which they remain together with certainty. Moreover, thecasing can be made of a thin plate material, such that a smooth outerside is at all times guaranteed, which is important in order to preventthe warp threads from meshing in the nozzles. It is clear, however, thatsuch a casing is optional, since, according to a variant, it is possibleto provide the segments as a whole with a smooth outer side.

The different segments, in particular the different plates, can bemutually connected, either in a mechanical manner or in any other waywhatsoever, for example by means of gluing, welding, sintering, etc. Anadvantageous technique for welding plates together consists in that useis made of hard soldering in a vacuum or in a specific gaseousatmosphere in an oven. The solder can hereby be provided on the platesby means of for example a silkscreen printing technique, which allowsfor a very precise dosage of the jointing media.

It should be noted that for example the etching and fine-blanking ofplates, as well as vacuum soldering in an oven can be done very cheaplyin large quantities, guaranteeing an economic production.

According to another possibility, at least a number of the segments canbe pressed loosely against one another. In the case where the segmentsare for example pushed in a casing, this casing can make sure that thesegments are automatically held together.

The segments can be made of any material whatsoever offering sufficientstability. Practical examples are for example metal, such as steel oraluminium, and ceramic material. Also the use of less costly materials,such as for example synthetic material, is not excluded.

Although the segments can be made in different shapes and dimensions,use is preferably made of a series of segments extending in thelongitudinal direction of the nozzle, for example a series of platesplaced against each other.

In the case of plate-shaped segments, they are moreover preferablysituated in planes extending mainly crosswise to the front side of thenozzle, in other words which are situated such that they are directedwith one edge to the side of the nozzle in which the outlet opening oroutlet openings are situated.

The segmented construction according to the invention makes it possiblefor the nozzle to be provided with internal partition walls of differentnature in a relatively simple manner, especially when plate-shapedsegments provided next to each other are used. According to a specialembodiment, such a nozzle will have one or several parts built up bymeans of the segments serving as a partition wall in the flow-throughcanalisation.

Such partition walls are in the first place designed to optimise thefluid flow, but they can also be used for other effects, such as forexample to reinforce the structure of the nozzle or the like.

The partition walls can be made in different manners, offering differentadvantages, which will become clear from the following description ofthe examples represented in the figures.

According to a second aspect of the present invention, it concerns anozzle which is provided with at least two outlet openings, whereby atleast one either or not partition wall of one piece is present in thetop part of the nozzle separating at least the two outlet openings, atleast as of a point situated inside the actual flow-through canalisationup to the outer wall, or practically up to the outer wall where theoutlet openings open in the outer side. Thus is obtained that the fluidis guided not only at the height of the outlet openings, as is knownfrom BE 1,012,608 and JP 55-172384, but that the fluid is alsoefficiently guided inside the actual head part of the nozzle, as aresult of which it may be assumed that it is possible to obtain betterflow characteristics for the fluid. Thanks to a correct positioning ofsuch a partition wall, or possibly of several of such partition walls inthe flow-through canalisation, it also becomes possible to supply thefluid in the right proportions to each of the outlet openings.

Thanks to this second aspect is also obtained that the fluid is guidedseparately up to the moment when the fluid leaves the nozzle, which isparticularly useful to optimize the outgoing fluid jet, as opposed tothe embodiment described in EP 0,145,824, where there is no partition inthe actual outlet opening.

According to a third aspect of the present invention, it concerns anozzle which is provided with one or several partition walls extendingin the longitudinal direction of the flow-through canalisation, wherebythese partition walls extend crosswise and continue materially from oneside of the flow-through canalisation up to the opposite other side. Bymaking use of one or several partition walls extending as a singlematerial through the flow-through canalisation, this offers theadvantage that the structure of the nozzle is reinforced. Compared to apartition wall which is free at one far end opposite to the oppositeside, as is known from EP 0,145,824, this moreover offers the advantagethat any meshing of pieces of fluff or little hairs of warp threadsand/or weft threads as they get jammed in between the free end of thepartition wall and the opposite wall, which may result in obstructions,is excluded.

According to a fourth aspect of the present invention, it concerns anozzle which is provided with at least one partition wall made as across partition in the shape of a blade-shaped guide near the outletopening or outlet openings. The use of actual blades offers theadvantage that an individual direction for the outgoing fluid can berealised for each individual outflow duct.

According to a fifth aspect of the present invention, it concerns anozzle which is provided with one or several partition walls, whereby atleast a number thereof extend downward up to at least a distance fromthe outlet opening or outlet openings, which is larger than the hairlength of the hairs which are usually found on textile fibres, inparticular up to a distance of about 1 cm. Thus, fibres, hairs and thelike which have penetrated cannot mesh behind the inner edge of suchpartition walls, which may be the case with traditional embodiments.

According to a sixth aspect of the present invention, it concerns anozzle which is provided with at least an intermediate connectionextending through the flow-through canalisation and forming areinforcement for the body of the nozzle, which intermediate connectionmay for example also consist of a partition wall. Thus, the bendingstrength of the nozzle is considerably increased, as a result of whichthe risk of deformations which may have an influence on the direction ofthe fluid jet is reduced. By the body is hereby meant the slender toppart which, as is known, is at least partially moved through the warpthreads. Said intermediate connection preferably extends at leastthrough the central part of the body and, better still, it extends overa large part of the aforesaid body up to, or practically up to itsbottom side.

According to a seventh aspect of the present invention, it concerns anozzle which is provided with a series of outlet openings which arearranged in a step-like manner from one far end of said series to theother far end in relation to the longitudinal direction. Thus, in ageneral manner, it is possible to realise a relatively flat fluid jet.Thanks to the correct position of the stepped arrangement, it moreoverbecomes possible for the fluid jet to optimally work in conjunction witha weft thread which is usually situated in the conveyor duct in thereed.

According to an eight aspect of the present invention, it concerns anozzle which is provided with a head part, whereby one or severalpartition walls are present in the flow-through canalisation of thishead part which, as a result of their direction and/or shape, functionas guiding elements to direct the fluid jet or fluid jets leaving theoutlet opening or outlet openings when the nozzle is used. Thus, it isnot only the outermost inner wall of the flow canalisation whichdetermines the direction and the behaviour of the outgoing fluid jet,but this direction is also determined by the partition wall or partitionwalls. As a result, the behaviour of the general fluid jet can befurther optimised, and it is even possible to separately influence therespective partial jets, in other words the jets coming out of therespective outlet openings.

It is clear that the embodiments according to the second to eight aspectare easy to realise in practice by making use of a segmentedconstruction corresponding to the aforesaid first aspect of theinvention. However, this does not exclude that nozzles according to thesecond to eighth aspect of the invention can also be realised without asegmented construction being applied thereby. It is clear that in thiscase also, the aforesaid advantages remain applicable.

According to the invention, the characteristics of each of the aforesaideight aspects can be combined at random. Also all other partialcharacteristics which will appear from the further description andclaims can be combined at random with one or several of the maincharacteristics of each of the aforesaid aspects, at least in so farthat these characteristics are not conflicting.

In order to better explain the characteristics of the invention, thefollowing preferred embodiments according to the invention are describedas an example only without being limitative in any way, with referenceto the accompanying drawings, in which:

FIG. 1 represents a part of a weaving machine with several nozzlesaccording to the invention;

FIG. 2 represents a section according to line II-II in FIG. 1;

FIG. 3 represents the nozzle represented in FIG. 2 in perspective and toa larger scale;

FIG. 4 represents a section according to line IV-IV in FIG. 3;

FIG. 5 represents the nozzle from FIG. 3 when disassembled;

FIGS. 6 and 7 represent views analogous to those of FIGS. 3 and 4, butfor a variant;

FIG. 8 represents another variant as disassembled;

FIG. 9 represents a section according to line IX-IX in FIG. 8, but ascomposed, however;

FIGS. 10, 11 and 12 represent views analogous to those of FIGS. 3, 4 and5, but for a variant;

FIGS. 13, 14 and 15 represent views analogous to those of FIGS. 3, 4 and5, but for another variant;

FIGS. 16 and 17 represent sections of two more embodiments of a nozzleaccording to the invention;

FIGS. 18, 19 and 20 represent cross sections of three furtherembodiments of a nozzle according to the invention;

FIG. 21 represents a section of an embodiment, whereby a crosswisedirected partition wall is provided in the flow-through canalisation;

FIG. 22 represents a possibility for realising a nozzle according toFIG. 21 when disassembled;

FIG. 23 represents a special embodiment of a nozzle according to theinvention;

FIG. 24 represents a view according to arrow F24 in FIG. 23;

FIG. 25 represents a view according to arrow F25 in FIG. 23 to a largerscale;

FIG. 26 represents the top end of the nozzle from FIGS. 23 to 25 inperspective;

FIG. 27 represents a section according to line XXVII-XXVII in FIG. 25;

FIG. 28 represents a view analogous to that of FIG. 2, but for thenozzle from FIGS. 23 to 27;

FIGS. 29 and 30 schematically illustrate an intermediate step of apossible method for realising nozzles according to the invention.

FIGS. 1 and 2 schematically represent a device 1 for inserting weftthreads 2 in a weaving machine, which is provided with nozzles 3, inparticular relay nozzles, realised according to the invention.

The given device 1 comprises a slay 4 with a reed 5 fixed to it which isprovided with a guide duct 6 along which the weft thread 2 is conveyed.The weft thread 2 is blown into the guide duct 6 by means of a mainnozzle 7 and it is further supported by fluid jets, in this case airjets 8 which are generated via the nozzles 3.

As is known, several main nozzles 7-7A can be provided to bring weftthreads 2 in the weaving shed as of several weft yarns 9-10.

As represented in FIG. 2, the nozzles 3 reach with their top endsthrough the lower warp threads 11 into the shed 13 formed by the lowerand top warp threads 11-12 during the insertion of the weft thread 2.The main nozzles 7-7A as well as the nozzles 3 are fed with a fluidunder pressure by means of a fluid source 14, for example compressedair, and they are controlled in a known manner by means of valves 15-16or the like.

As represented in FIGS. 3 to 5, the nozzles 3 are provided with aflow-through canalisation 17 for the fluid, in this case a single duct,which opens into the environment via an outlet opening 18.

The invention is special in that the nozzles 3, at least according to afirst aspect of the invention and, as can be seen in FIGS. 3 to 5, areat least partially composed of segments 19-20.

In the given example of FIGS. 3 to 5, the segments 19-20 consist ofplates which are provided laterally against each other. These platesextend in the longitudinal direction of the nozzle 3 and they aresituated such that they are directed with one edge 21 towards the side22 of the nozzle 3 in which the outlet opening 18 is situated.

The segments 19 are provided with passages 23 which, when the whole iscombined, determine the shape of the flow-through canalisation 17 or, inother words, the inner shape of the nozzle 3.

The segments 20 form end walls which serve as sealing elements or lids.

As explained in the introduction, the segments 19-20 can be fixedagainst each other in any way whatsoever, for example by means of weldedjoints 24.

The segments 19-20 can possibly be provided with auxiliary means tomutually position the composing parts, as is schematically representedby means of a dashed line in FIG. 5, and alternatively, representedconnecting elements 25-26 and/or mechanical coupling elements, inparticular pins 27 and holes 28. It is clear that a large number ofvariants are possible.

FIGS. 6 and 7 represent a variant whereby the segments 19-20 areprovided in a casing 29. In this case, the segments 19-20, or at leastspecific parts thereof, can possibly be pressed loosely against eachother, whereby the casing 29 keeps the segments 19-20 together.

In the embodiments of FIGS. 3-5 and 6-7, the passages 23 extend over theentire thickness of the segments 19 concerned. According to a variantwhich is represented in FIGS. 8 and 9, it is also possible to make useof one or several segments 30, with a passage 31 extending over only apart of the thickness of each segment 30 concerned. Such an embodimentoffers the advantage that the wall part 32 remaining next to the passage31 can serve as a sealing element or partition wall without a separatesegment being required to this end. Another advantage consists in thatthe material parts 33 and 34 as such remain in a fixed position inrelation to each other. Said passage 31 can also be easily formed bymeans of a mechanical operation, for example by means of milling.

FIGS. 10 to 12 represent an example of an embodiment of a nozzle 3according to the invention, whereby the segmented construction is usedto realise partition walls 35 in the flow-through canalisation 17 in asimple manner from a constructional point of view. These partition walls35 consist of parts 36 which are part of segments 37 provided betweensegments 19, so that these parts 36 also serve as longitudinalpartitions.

The parts 36 are limited by a bottom edge 38, such that, when thesegments 19-20-37 represented in FIG. 12 are joined together, a commonduct is obtained at the bottom in the nozzle 3, and separate ducts39-40-41 are created more towards the top, which are situated laterallynext to one another in the given example and which extend up to the side22 and thus define several outlet openings 18.

Thus, it is possible to realise a separate duct towards each outletopening 18 and/or towards several groups of outlet openings 18, as aresult of which a better guiding of the fluid flow is obtained.

In the embodiment of FIGS. 13 to 15 is represented a variant whereby thepartition walls 35 are formed by means of segments 47 which are of thesame type as the aforesaid segments 30, whereby the wall parts 32 nowfunction as partition walls 35.

It should be noted that the partition walls 35, in the embodiment fromFIGS. 10 to 12 as well as the one from FIGS. 13 to 15, seen crosswise,in particular according to the direction D, extend in one piece from oneside to the other side of the flow-through canalisation 17, so that, asopposed to the use of a partition wall which does not continuematerially, as is known from EP 0,145,824, no zones are created in whichhairs or the like, coming for example from the weft thread 2, can becomejammed.

As is schematically represented in FIG. 16, the partition walls 35, nomatter in what way they are formed, preferably extend downward up to adistance A from the outlet openings 18 concerned which is larger thanthe largest hair length of the hairs 48 which are usually found ontextile fibres, in particular on a weft thread 2 or a warp thread 11-12.Thus is excluded that hairs 48 which might penetrate can becomeentangled under the lower edge 38 and fix themselves there, after theyhave come off the textile fibre, and become concentrated there. The riskof hairs 48 penetrating as of warp threads is bigger since the outletopenings 18 go through the warp threads 11 at each insertion of a weftthread. Thus, the risk of contamination, in particular of obstruction ofthe flow-through canalisation 17 is minimised. Practically, the distanceA preferably amounts to about 1 cm or more.

Thanks to the segmented construction, it is also easy to realiseintermediate connections in the flow-through canalisation 17 which forma reinforcement for the body 49 of the nozzle 3, in other words for theslender part thereof. FIG. 17 represents an example thereof, whereby apartition wall 35 is also made as a special reinforcement part. To thisend, the partition wall 35 extends over the entire length L of theslender body 49, as a result of which it functions as a reinforcementrib.

In order to obtain such a reinforcement, said partition wall 35 does notnecessarily have to extend over the entire length L, but at least onereinforcement will preferably be made in or around the central part 50,so that the body 49 is at least reinforced in the middle.

It should be noted that said reinforcement can possibly be formed oflocal connecting ribs alone.

The aforesaid segments and possibly partition walls 35 formed thereofcan serve as guiding elements, provided they have a suitable directionor shape, to direct the fluid jet 8 leaving the outlet opening or outletopenings 18 when using the nozzle 3. A specific example thereof isrepresented in FIG. 18, which shows an embodiment whereby the partitionwalls 35 consist of plate-shaped elements or the like which extendslantingly at an angle H according to a general direction which, whenthe nozzle 3 has been mounted in a weaving machine, extends slantinglytowards the reed 5.

FIGS. 19 and 20 represent some more special embodiments which show thatthe segments, and in particular partition walls 35 formed thereof, mayconsist of elements, in particular plates or the like, which may have avarying thickness and/or a shape which deviates from a flat shape, as afunction of the desired effect.

FIG. 21 shows another embodiment with a partition wall 51 which is madeas a cross partition, and in particular as a blade-shaped guide near theoutlet opening or outlet openings 18. In principle, the partition wall51 can be made as a loose segment provided between neighbouringsegments, but it is easier to make use of a segment 52 as represented inFIG. 22.

It is clear that it is also possible to realise embodiments by means ofthe above-mentioned segments having longitudinal as well as crosspartition in the flow-through canalisation 17, for example by placingseveral segments 52 against one another. Thus, it is possible to realisea nozzle 3 with a whole series of outlet openings 18, whereby separateducts to each outlet opening 18 are at least formed in the head of thenozzle 3.

In the given examples, the flow-through canalisation 17 generallyextends in the longitudinal direction of the nozzle 3 and it traces acurve near the top end to finally flow into the outlet opening or outletopenings 18. The above-mentioned partition walls 35 and 51 herebypreferably extend through at least a part of this curve. This offers theadvantage that the fluid is easily bent with a minimal risk of unwantedturbulences being created which might have a negative influence on thefluid jet 8.

FIGS. 23 to 28 represent a special embodiment with a nozzle 3 having aseries of outlet openings 18 which are arranged in a stepped manner,thanks to the construction in segments, as of one far end of the seriesto its other far end, which results in the advantages mentioned in theintroduction.

The direction of the stepped shape is preferably selected such that abundle of parallel or almost parallel outgoing fluid jets, in particularpartial jets 8A is obtained, whereby the intersections of these partialjets 8A with a theoretical plane 53 going through the guiding duct 6 andstanding at right angles to the surface of the reed 5, are all situatedat practically the same distance from the outlet openings 18, whichamounts to some 50 mm.

The nozzle 3 with the step-like arranged outlet openings 18 isparticularly suitable to be made with a lateral protuberancecorresponding to the invention which is described in Belgian patent No.1,012,608.

It should be noted that the different parts of the segments can be heldtogether in the right position in any way whatsoever while being joined,until they are fixed to each other. FIG. 29 represents a practicalpossibility for holding two parts 19A and 19B of a segment 19 in a fixedposition until this segment 19 is connected to other segments. To thisend, an additive 54 is formed for the outlet opening 18 to be formedwhich connects the parts 19A and 19B to each other, which additive 54 isremoved after the segments have been joined and fixed to each other, forexample up to the indicated line 55, by means of milling, grinding orthe like.

In this manner can also be provided a blade in a simple manner in anozzle formed of segments, by making use of an additive 54 asrepresented in FIG. 30.

All the embodiments described above by means of the figures areapplications of the aforesaid first aspect of the invention. It is clearthat, in a number of these embodiments, also one or several of the otheraspects mentioned in the introduction have been applied. As explained inthe introduction, however, the characteristics according to the secondto eighth aspect can also be realised independently of the first aspect,as well as independently of each other, without making use of asegmented construction.

In the case of a segmented construction, however, it is possible to workwith mainly horizontal segments, by which are meant segments extendingmainly perpendicular to the longitudinal direction of the nozzle.

The invention is by no means limited to the above-described embodimentsgiven as an example and represented in the accompanying drawings; on thecontrary, such a nozzle can be made in many sorts of shapes anddimensions while still remaining within the scope of the invention.

1. Nozzle for supporting a weft thread in a weaving machine, comprisingat least one outlet opening; a flow-through canalisation for supplying afluid to said at least one outlet opening; said nozzle being at leastpartially formed of segments.
 2. Nozzle according to claim 1, whereinthe outer shape of the nozzle and the inner shape of the flow-throughcanalisation are different from each other and wherein said segmentsdefine said inner shape.
 3. Nozzle according to claim 1, wherein thesegments are plate-shaped.
 4. Nozzle according to claim 1, wherein thesegments are disposed in a casing.
 5. Nozzle according to claim 1,wherein at least a number of the segments are mutually connected. 6.Nozzle according to claim 1, wherein at least a number of the segmentsare pressed loosely against each other.
 7. Nozzle according to claim 1,wherein the nozzle is elongated and the segments extend along thelongitudinal direction of the nozzle.
 8. Nozzle according to claim 3,wherein the segments are disposed such that they are directed with oneedge facing towards a side of the nozzle in which the outlet opening oroutlet openings are located.
 9. Nozzle according to claim 1, whereinsaid segments at least in part form one or more partition walls withinthe flow-through canalisation.
 10. Nozzle according to claim 9, whereinthe nozzle has at least two outlet openings, and wherein one or morepartition walls define separate ducts extending towards a respectiveoutlet opening and/or groups of outlet openings.
 11. Nozzle according toclaim 10, wherein said one or more partition walls extend up to a sideof the nozzle where the outlet openings open into the environment. 12.Nozzle according to claim 9, wherein one or more of said partition wallsare formed as a longitudinal partition.
 13. Nozzle according to claim12, wherein the partition wall or walls enable a lateral division of theflow-through canalisation in the ducts.
 14. Nozzle according to claim 9,wherein the nozzle is elongated and the flow-through canalisationgenerally extends in the longitudinal direction of the nozzle and tracesa curve near a top end of the nozzle to finally flow into the outletopening or outlet openings, and further wherein one or more of thepartition walls extend through at least a part of said curve.
 15. Nozzleaccording to claim 9, wherein at least one of the partition walls ismade as a cross partition defining a blade-shaped guide near the outletopening or outlet openings.
 16. Nozzle according to claim 9, wherein atleast one of the partition walls extends crosswise in one piece from oneside to the other side of the flow-through canalisation.
 17. Nozzleaccording to claim 9, wherein mainly all the partition walls extenddownward up to a distance (A) from the outlet opening or outlet openingswhich is larger than the length of the hairs which are usually found ontextile fibres.
 18. Nozzle according to claim 1, wherein the segments,as well as any partition walls formed by same, comprise plate-shapedelements which extend slantingly at an angle (H) according to a generaldirection which, when the nozzle is mounted in a weaving machine,extends slantingly towards a reed of the weaving machine.
 19. Nozzleaccording to claim 1, wherein at least one of the segments comprises anintermediate connection forming a reinforcement for a body of thenozzle, at least in the central part of the nozzle.
 20. Nozzle accordingto claim 1, wherein at lease some of the segments are formed to serve asguiding elements to direct a fluid jet discharged from the outletopening or outlet openings when the nozzle is in use.
 21. Nozzleaccording to claim 1, wherein the segments comprise straight, mainlyflat contiguous elements.
 22. Nozzle according to claim 1, wherein atleast some of the segments comprise elements having varying thicknessesand/or shapes which are not flat.
 23. Nozzle according to claim 1,wherein the nozzle has a series of outlet openings which are arrangedstep-like, by means of the segmented construction, from one far end ofthe series to the other far end thereof.
 24. Nozzle for supporting aweft thread in a weaving machine, said nozzle comprising a flow-throughcanalisation for a fluid flowing out of at least one outlet opening ofthe nozzle, comprising one or a combination of two or more of thefollowing: the nozzle is provided with at least two outlet openings, andwherein at least one partition wall is provided in the top part of thenozzle separating at least the two outlet openings, at least at a pointlocated situated inside the flow-through canalisation and up to an outerwall of the nozzle, or practically up to said outer wall, where theoutlet openings open to the environment; the nozzle is elongated and isprovided with one or several partition walls extending in thelongitudinal direction of the flow-through canalisation, said partitionwalls extending crosswise and continuing substantially from one side ofthe flow-through canalisation to the opposite other side; the nozzle isprovided with at least one outlet opening and at least one partitionwall made as a cross partition in the shape of a blade-shaped guidedisposed near each outlet opening; the nozzle is provided with one ormore partition walls, at least a number of said partition wallsextending downward up to at least a distance (A) from each outletopening, said distance being larger than the hair length of the hairswhich are usually found on textile fibres; the nozzle is provided withat least an intermediate connection extending through the flow-throughcanalisation and forming a reinforcement for a body of the nozzle; thenozzle is provided with a series of outlet openings which are arrangedin a step-like manner from one far end of said series to the other farend; and the nozzle has a head part, including said canalisation andwherein partition walls are disposed in the flow-through canalisation ofsaid head part which, due to their direction and/or shape, function asguiding elements to direct a fluid jet leaving the outlet opening oroutlet openings when the nozzle is in use.